<template>
  <el-container class="home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/icon2.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="iscollapse ? '64px' : '200px'">
          <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF"
          :unique-opened="true"
            :collapse="iscollapse"
           :collapse-transition="false"
           :router="true"
           :default-active="activePath"
        >
            <!-- 一级菜单 -->
          <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
              <!-- 一级菜单的模板区 -->
            <template slot="title">
              <i :class="iconObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/'+ subItem.path+''" v-for="subItem in item.children" :key="subItem.id" @click="saveNavstate('/'+ subItem.path+'')">
                <template slot="title">
              <i class="el-icon-menu"></i>
              <span>{{subItem.authName}}</span>
            </template>
            </el-menu-item>
          </el-submenu>
         
        </el-menu>
      </el-aside>

      <!--右侧内容 -->
      <el-main>
          <!-- 路由占位符 -->
          <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data() {
      return {
          menulist:[],
          iconObj:{
              '125':'el-icon-s-check',
              '103':'el-icon-pear',
              '101':'el-icon-goods',
              '102':'el-icon-document',
              '145':'el-icon-tickets',
          },
        //   是否折叠
          iscollapse:false,
        //   被激活的链接地址
          activePath:''
      }
  },  
  created() {
      this.getMenuList()
      this.activePath=window.sessionStorage.getItem('activePath')
  },  
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    // 获取所有菜单的数据
    async getMenuList(){
        const {data:res} = await this.$http.get('menus');
        if(res.meta.status !== 200)return this.$message.error(res.meta.msg)
        this.menulist=res.data
        console.log(res)
    },
    // 点击按钮切换菜单展开
    toggleCollapse(){
        this.iscollapse = !this.iscollapse
    },
    // 保存链接激活地址
    saveNavstate(activePath){
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath=activePath
    }
  },
};
</script>
<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu{
      border-right: none;
  }
}
.el-main {
  background-color: #eaedf1;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2rem;
    cursor: pointer;
}
</style>